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Open Access Research article

Application of the Western-based adjuvant online model to Korean colon cancer patients; a single institution experience

Minkyu Jung1, Geon Woo Kim2, Inkyung Jung3, Joong Bae Ahn1, Jae Kyung Roh1, Sun Young Rha1, Hyun Cheol Chung1, Nam Kyu Kim4, Tae Il Kim5 and Sang Joon Shin1*

Author affiliations

1 Division of Medical Oncology, Department of Internal Medicine, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-go, Seoul, 120-752, Korea

2 Department of Mathematics, Yonsei University College of Science, Seoul, Korea

3 Department of Biostatistics, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-go, Seoul, 120-749, Korea

4 Department of Surgery, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-go, Seoul, 120-752, Korea

5 Department of Gastroenterology, Yonsei University College of Medicine, 50 Yonsei-ro, Seodaemun-go, Seoul, 120-752, Korea

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Citation and License

BMC Cancer 2012, 12:471  doi:10.1186/1471-2407-12-471

Published: 12 October 2012

Abstract

Background

Adjuvant Online (AOL) is web-accessible risk-assessment model that predicts the mortality and the benefits of adjuvant therapy (http://www.newadjuvantonline.com webcite). AOL has never been validated for Asian colon cancer patients.

Methods

Using the Yonsei Tumor Registry database, patients who were treated within the Yonsei University Health System between 1990 and 2005 for T1-4, N0-2, and M0 colon cancer were included in the calculations for survival. Observed and predicted 5-year overall survival was compared for each patient.

Results

The median age of the study population of 1431 patients was 60 years (range, 15–87 years), and the median follow-up duration was 7.9 years (range, 0.06–19.8 years). The predicted 5-year overall survival rate (77.7%) and observed survival (79.5%) was not statistically different (95% Confidential interval, 76.3–81.5) in all patients. Predicted outcomes were within 95% confidential interval of observed survival in both stage II and III disease, including most demographic and pathologic subgroups. Moreover, AOL more accurately predicted OS for patients with stage II than stage III.

Conclusions

AOL tended to offer reliable prediction for 5-year overall survival and could be used as a decision making tool for adjuvant treatment in Korean colon cancer patients whose prognosis is similar to other Asian patients.

Keywords:
Therapy; Adjuvant; Colonic neoplasms; Prognosis